A2K45R - 45Amp Fuse

A2K45R - 45Amp Fuse

The Mersen A2K45R Amp-Trap® Fuse is made for electrical systems that need quick, dependable protection from overloads and short circuits. This 45 amp Class RK1 fast-acting fuse is commonly used in commercial and industrial equipment where protecting circuits and connected components is important.

Designed for use in both 250VAC and 250VDC applications, the A2K45R reacts quickly during fault conditions to help you reduce damage to wiring, panels, and electrical equipment. Its current-limiting design helps control the amount of fault energy passing through the circuit, which can help you improve overall system protection.

The compact ferrule design fits easily into compatible fuse holders and clips, making replacement and installation straightforward. Built with tin-plated copper terminals and a durable PolyTube body, this fuse is designed for consistent performance in demanding environments.

The A2K45R is often found in control panels, motor control centers, feeder circuits, and other power distribution systems where fast response and reliable circuit protection are needed.

Key Features and Benefits

• Fast-acting protection for overloads and short circuits
• Class RK1 current-limiting fuse design
• 45 amp rating
• Rated for 250VAC and 250VDC systems
• 200 kA interrupting capacity
• Ferrule terminal configuration
• Compact size for easier installation
• Tin-plated copper terminals
• Durable PolyTube insulating body
  

Technical Specifications

• Manufacturer: Mersen
  
• Catalog Number: A2K45R
  
• Product Type: Class RK1 Fast-Acting Fuse
  
• Series: A2K-R Amp-Trap®
  
• Ampere Rating: 45A
  
• Voltage Rating AC: 250VAC
  
• Voltage Rating DC: 250VDC
  
• Frequency: 50/60 Hz
  
• Fuse Class: RK1
  
• Fuse Speed: Fast-Acting
  
• Interrupting Rating: 200 kA
  
• Terminal Type: Ferrule
  
• Mounting Type: Clip
  
• Terminal Material: Tin-Plated Copper
  
• Body Material: PolyTube
  
• Product Diameter: 20.6 mm
  
• Product Length: 76.2 mm
  
• Product Weight: 0.0549 kg
  

Material Compliance and Certifications

• RoHS Compliant
• UL rated for AC and DC applications
• Current-limiting construction
  

Where It Works Best

It is commonly used for:

• Industrial control panels
• Motor control centers (MCCs)
• Branch circuit protection
• Feeder circuit protection
• HVAC systems
• OEM equipment
• Commercial electrical systems
• Manufacturing machinery